Ore-pulverizing machine.



A. J. MILLROSS.

ORB PULVERIZING MACHINE. APPLIUATION FILED D110. a, 1902. RBNEWBD un.14, 1906.

PATBINTTBD OCT. 9, 1906.

M. L d ymm To all whom t may concern.-

` UNITED sTATFs ALBERT J. MILLRoss, oF

PATENT OFFICE.

Los-ANGELES; CALIFORNIA, AssIGNoR oF ONE-FIFTH TO L. E. KNOLES, OF'LOSANGELES,l CALIFQRNIA.

' i oRE-PuLvEnlzlNG MACHINE.

. Application liled December 8,

13e it known that I, ALBERT J. MILLnoss, a cltlzen of the United States,residing at Los Angeles, inthe county of Los Angeles and State ofCalifornia, have invented new and vuseful Improvements inOre-Pulverizers,` of which the following is a specification. ates tomachines .for pulore or rock or other hard substances by hur ing thesame repeatedly against an obstacle until thev substance being operatedupon is reduced to the required ineness and then vpassesI out of themachine; and the objects thereof are to provide a machine of simpleconstruction and of great efficiency that will reduce ore or any otherhard breakable substance to any degree of fineness that may be desired.I accomplish these objects by the mechanism described herein landillustrated 1n the accompanying drawings, in which- Figure 1 is a sldeview, partly in elevation and partly in section, of my machine. Fig. 2is a plan of a fragment of the hurling-wheel. Fig. 3 is a verticalsection on the line `u, a of Fig. 2. Fig. 4 is a plan of a fragment ofone of the stationary breaker-rin s 6. f

In the drawings, 1 is a cy indrical casing which forms the verticalsides of the pulverizing-chamber and is secured to and supported b bod-frame composed of supports 2 2, of W 'ch t ere are preferably four .innumber. To this easing and to the supports is secured by bolts 3 anannular supporting-ring 4, on which .rests the lower breaker-ring 5, theother1 breaker-rings being arranged thereabove and supported thereby.The breakerrings 6 are alike on both sides, and either side may beplaced up. These rings are provided. ats'uitable distances apart withsockets 7 for the reception of the spacing-rivets 8, the thickness ofthe heads of which determines the distance of separation of thebreaker-rings and the degree of iineness to` which the ore is pulverizedor broken.' The thlnner the revet-head is the smaller the openlng orrlngs 1s and the finer the ore must be pulverized or broken before itwill pass therethrough. These breaker-rin s are provided withclearance-notches 9 in t eir outer edges forthe assa e to the lowerportion of the null of t e pu verized or broken ore or other substancewhich passes through vt e interstices between the breaker-rings. The in-My Invention re Specification of Letters Patent.l

1902. Renewed March 14. 1906. Serial No. 306.072.

l,discharge-outlet of the interstice between the. breaker- Patented oet.o, 190e.

ner surface of breaker-ring 5 is preferably smooth. The inner .surfacesof breakerrings 6 are provided with inwardly-projecting knobs 10, whichare preferably s uare in cross-section and are so spaced that t e bodyof the ring is entirely or almost entirely protected from the directimpact of the body v being pulverized in the ulverlzing-chamber, theinner lining o`f whic is formed by these breaker-rings. The to of thelpulverizingchamber is preferably ormed of a lurality of top reducingbreaker-rings 11 of) gradually-decreasing size, provided with socketsand knobs and spaced apart by rivets like rings 6. The purpose of thisconstruction is topermit 'of pulverized ore escaping out of thepulverizing-chamber through the top. This construction is moreconvenient for handling and for transportation in tains on'animals thanif the top were cast in one iece, also for( the replacement of partsshou d one part wear faster than another. On the top reducinbreaker-ring rests a closing-plate 12, provided with an: ore-feedopening 13, through which ore is fed from hopper 14 intothe'pulverizing-chamber. A swinging gate 15, which is automaticallyoperated to open and close, is provlded to keep the .hopper closed whenore is not being 'fed into the chamber. The ore-feed openingand'discharge-outlet of the ore-hopper are lnclosed by a casing 16,having a removable through which water is fed into the machine when itis used for the center of the c osing-plate 1s an annular openingprovided with a depending circular flange 12/, through which projects adepending circular flange 18 which is cast on the bottom of and integralbolted to the top frame 19, which top frame is adjustably secured to thebody-frame by bolts 20, which pass through holes 21 or 22 or 23, asdesired, to raise the top frame, the sides ofthe pulverizing-chamberbeing changed to correspond with the location of the topf frame, so thatmore breaker-rings may be put in and the size of the pulverizingchamberenlarged.

Through box 18 passes the vertical Iotatable operating-shaft 24, whichis surrounded in the box by packing 25, preferably of brass. Below thebox is screwed upon the shaft an annular drip-cup 26, which will catchand the mounlp ulverizing wet ores. In 4 plug 17 in the top thereof,

with box 18, which is' IOC number; but any other number'may beused whichwill give sufficient rigidity.l Resting upon the inner ends of thesespokes and having depending portions d therebetween and surrounding theoperating-shaft is the tubular jacket d, the bottom portion of which isflaring, as shown. In the edge of the flaring base are sockets d', inwhich the inner ends of rods e rest. On these rods are mountedhurling-segments f and g, the alternate sections f being provided withupwardlypro-4 jecting knobs f preferably squarein horizontalcross-section and having curved faces, as 'shown in Figs. 2 and 3. Theseknobs are preferably 'of unequal 4height,vand the faces `thereof curvetoward the operating-shaft and toward one edge of the segment, so thatwhen the ore strikes the face of the knob it is given a twisting motion,like the motion im-v parted to a bullet fired from a rifle. The othersegments g have, preferably,a smooth face, but may be provided withknobs, if desired. 4These knobs may be of any desiredj but I prefer theform described here- 1n, as it gives the ore the motion which I 'thinkis bestadapted to cause it to disintegrate/when it strikes thebreaker-rings. These segments are' provided with sockets fi in one edgethereof for the reception of rivets j, the

y same asv the breaker-rings, so that they may Y be s acedor separatedtothe same extent as the reaker-rings' ,to permit the`pulverized orbroken ore to pass out therebetween. The

outer ends of rods e are passed into holes in an annular rin 'h beforethe inner vends are dro ped into t e sockets. Ring' h is bolted to t evouter ends of the radial spokes, which are preferabl steel bars withtheir outer ends turned as s own. After the hirling-segments are inplacenan annular ring c,hav`ing an upwardly-turned flange k', whichprojects up under the'breaker-ring 5, is bolted to the radial spokes.IAn annular ring l is then dropped upon .the inner Yends of thehurlingsegments and secured to the bottom of jacket d by screws whichpass 'through a vertical slot, so that ring l may be adjusted verticallywhen the openings between the edges of the segments are increased or-diminished in size, and thereby hold the inner ends firmly in place. Inpractice I prefer to make the hurling-segment of cast-iron and cast itwith the rods e in place therein. Below the hub of the hurling-wheel theoperating-shaft is provided with pulley 29, to which power is applied torottte the shaft. Any other means may be used to impart motion thereto,such as a bevel-gear. The bottom `of the operatingshaft is mounted inboxl 30, having packing 31 of brass or other suitable material, therein.The opposite sides of box 30 are provided with depending legs 30 whichstraddle the adjusting-wedge 32 and supporting-brace33. The supporting-brace is preferably of U- shaped iron and has stops 33 fastened on theouter sides thereof on both'sides of the legs 30 of the box 30 and isbolted at itsouter ends to the supports 2. These stops revent the box 30from moving laterally. casing 34 is provided to prevent the pulverizedore from alling upon pulley 29 and into box' 30 and surrounds the sameexcept at one point, whereit has an opening inthe side for the passagetherethrough of a belt to operate pulley 29. At this opening it isjoined byabeltprotecting casing 35, which runs tothe outside of thelower partof the outer casing of thel machine. The upper ,ortion ofcasing 34 is preferablycone-shaped), so that the pul- 'verized ore willnot lodge thereon, and this casing is provided with a bottom 37. Thelower part of the outer casing is made u-p of segments, a small section36 directly be- 4neath the slanting portion of supports 2, be' ingstationary and being rovided with a groove 36 in the vertical e gesthereof, into which groove the edges of sections 36 may be dropped intoplace. The u per part 38 of the outer casing is of `suitable shape toslip ioo down over the upper portion of the mill and rest on the lowersection. Should the bottom of the operating-shaft wear of, the shaft maybe adjusted by the Wedge 32, which is provided with a rotatable but notlongitudinally-movable bolt 39, the inner end of which is threaded andworks in a'thieaded socket 40 in the end of the wedge. This bolt has anoperating-wheel 41, by means of which it is rotated. Supports 2 2 arebolted to sills 42.

In-the operation of my machine power is applied to revolve shaft 24,carrying wheel IIO.

r28, and ore is fed into the pulverizing-chamv ber. .When the `orestrikes Wheel 28, it is hurled against the breaker-rings and isdisintegrated bythe impact, falling back upon the wheel and being againhurled against the breaker-rings until it is fine enough to ass throughthe interstices between'the brea errings or the segments of thehurling-wheel.

'iIt will be observed that the velocity of the hurling-wheel createsair-currents through the interstices, which carry the pulverized oretherethrough. It will be observed-that the interstices between thebreaker-rings and the segments of the hurling-wheel and the rings of thetop can be adjusted' to any desired size by the thickness of theheads ofthe rivets which drop into the sockets of the res ective parts andI thatby this adjustment the same 'mill may be used for pulverizing rock to apowder or for breaking it up into small pieces' It Will also be observedthat the size of the pulverizing-chamber can be enlarged or diminishedby putting in or taking out one or more of the breakerlrings. After theore is pulverized or broken to the required fineness it passes out ofthe pulverizing-chamber and falls into a suitable receptacle (not shown)below the sills.

Having described my invention, What I claim as new, and desire to secureby Letters Patent, is- .Y

1. An ore-pulverizing machine comprising a frame having in the upperortion thereof an ore-pulverizing chamber t e inner lining of the sidesand top of which chamber is composed of stationary separatedbreaker-rings, said rings having on the inner faces thereofinwardly-projecting lugs, and the side rings having clearance-notches inthe outer edges thereof, the bottom of said composed of a rotatinghurling-Wheel rigidly mounted on a vertical shaft, said wheel beingcomposed of separated segments having on the upper faces of thealternate segments upwardly-proj ecting lugs.

2. An ore-pulverizing machine having a frame, a rotatable vertical shaftmounted in said frame; a hurling-Wheel on said shaft the upper face ofsaid Wheel. being composed of separated segments, the alternate segmentshaving upwardly-projecting lugs; horizontally and,I separatedbreaker-rings surroundchamber being ing said shaft above said Wheel,said rings I forming the sides -of the ore-pulverizing chamber andhaving lugs on their inner faces and clearance-notches in their outeredges; a top resting on said rings composed of separated reducingbreaker-rings and a central closing-plate having an ore-feeding aperturetherein; a casing and ore-hopper forming a closure for said aperture.

3. In an ore-pulverizing machine the combination of a central verticalrotating shaft; a hurling-Wheel affixed to said shaft, the upper surfaceof Which Wheel is composed of separated segments, the alternate membersof which are provided with upwardly-projecting lugs Witha casingsurrounding and projecting above said Wheel, said casing having aliningcomposed of horizontally and separated' breaker-rings having on theinner faces thereof inwardly-projecting lugs, the rings forming thevertical portion of the lining having clearance-notches in their outeredges. y

4.' In an ore-pulverizing machine a central vertical revoluble shafthaving affixed thereto a hurling-Wheel the upper surface of Which saidWheel is composed of sectoral plates hav ing overlapping, separated,radial edges, in combination with a stationary pulverizingchamber.

yIn Witness that I claim the foregoing I have hereunto subscribed myname this 17th 'day of ovember, 1902.

ALBERT J. MILLROSS.

Witnesses:

' G. E. HARPHAM,

HENRY T. HAZARD.

